Razor-sharpening device



N. E. GIBSON. RAZOR SHARPENING DEVICE. APPLICATION FILED JUNE 1, 1920.

Patented Jan. 25, 1921.

nnrreo STATES PATENT OFFICE.

I RAZOB-SHAR?ENING DEVICE.

Specification of Letters Patent.

Patented Jan. 25, 1921.

Application filed June 1, 1920. Serial No. 385,464.

To all whom it may concern:

Be it known that I, NICHOLAS E. GIBSON, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Razor-Sharpening Devices, of which the following is a specification.

This invention relates to improvements in razor sharpening device for holding razor blades while being sharpened, and one of the objects of the invention is to provide an improved holder of this character embodying jaws between which the blades are adapted to be clamped and means for looking or securing the jaws against separation while the device is in use.

A further object is to provide an improved device of this character, the outer faces of the jaws of which are constructed so as to guide or hold the edge of the blade in the true or proper relation to the strep or hone whereby an inexperienced person may readily sharpen blade without injuring the same.

To the attainment of these ends and the accomplishment of other new and useful olfjects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawing illustrating this invention and in which- Figure 1 is a perspective view of the ole vice showing the jaws partly open.

Fig. 2 is a sectional View on line 2 2 Fig. 1, with the parts in another position.

Fig. 3 is anenlarged detailed sectional view somewhat similar to Fig. 2 and showing the parts in another position.

Fig. 4 is a View partly in elevation and partly in longitudinal section and partly broken away.

Fig. 5 is an enlarged view on line 5-5 Fig. 4.

Fig. 6 is a detail view showing the end of the handle and the locking pin.

Fig. 7 is an end View showing the position of the holder with relation to the strop when in use.

Referring more particularly to the drawings the numerals 10 and 11 designate two jaws of any desired size and configuration, the jaw 11 being provided with lugs 12 while the jaw 10 is provided with openings 13 adapted to receive the lugs when the jaws are closed or in gripping relation to each other. a

The jaw 11 is provided with spaced knuckles 14 and a tubular extended portion 15 which serves as a handhold in a manner to be set forth. The jaw 10 is provided with a knuckle 16 adapted to stand intermediate the knuckles 14c and the knuckle 16 is provided with screw threads 17 while the knuckles 1 1 have a smooth internal bore which is preferably of a diameter slightly larger than the bore of the knuckle 16. A handle 18 is provided with a reduced portion 19 at one end to form a shoulder 20 and is provided with a further reduced portion 21 beyond the reduced portion 19 and which reduced portion 21 is provided with screw threads 22 adapted to engage the threads'17 of the knuckle 16. This threaded portion 21 of the handle projects beyond the knuckle 16 and terminates within the outer knuckle 14 .and a threaded cap 23 engages the threaded extrcmity of the handle 18 for holding the parts together. This cap is of a size to fit within the outer knuckle 1 1.

The reduced portion 19 of the handle enters the knuckle 14; and substantially fills the same so that the edge 21 of the extension 15 of the knuckle 14 will stand in close proximity to the shoulder 26 of the handle 18.

The reduced portion 21 of the handle is provided with a cutaway or recessed portion 25 extending longitudinally of the portion 21 and the knuckle 16 is provided with a recessed portion 26 extending transversely of the threads 17 therein. These recesses 25, 26 are adapted to register with each other and the recess 25 is of a width considerably greater than the width of the recess 26 so that when a pin 27 is seated in the recess 26 it will substantially fill the recess 26 and project therebeyond so as to enter the recess 25 in the handle, and the recess 25 is of a width considerably greater than the diameter of the pin 27. lVith this construction it will be manifest that when the handlelS and the jaw 10 are moved relatively with relation to each other, and which relative movement will be permitted by reason of such construction, there will be a lost motion so to speak between the handle 18 and the jaw 10 but when either of the shoulders 28, 29 of the recess 25 engages the pin 27., which latter will be held against displacement with respect to the knuckle 16 by reason of the recess 26,but

which recess will permit of a slight shift ing movement of the pin 27 therein, the shoulder of the recess engaging the pin Wlll cause the knuckle 16, and consequently the jaw 10 to be moved with the handle in the I direction of movement of the handle.

The shoulders 28, 29 are so arranged that whenthe parts are in the position shown in 2 the handle has just been moved so as to cause the jaws 10 and 11 to assume a gripping relation 'to clamp a blade therebctween. When the handle 1s moved in the opposite direction, or until the shoulder 29 engages the pin 27, a further movement of the handle in the same direction will cause the shoulder 29, which is in engagement with the pin 27, to move the jaw 10 into the position shown in the dotted lines in Fig. 2 to separate the jaws to permit the removal or insertion of a blade.

In order to accomplish this relative move mits the jaws to be held wide-open while the blade may be inserted therebetween.

The jaws are then closed by rotating the handle 18 in the opposite direction and when the jaws are in a clamping relation or in full lines as shown in Fig. 2, a slightly further rotation of the handle 18 in the same direction will cause, by reason of the threads 17, 22, a binding or gripping a'ctionto be exerted uponthe parts at the pivots and in a direction longitudinal of the pivot by reason of the adjacent ends of the'knuckles 14 and 16 being drawn against each other, at

.the same time the end of the tubular extension 15 will be drawn against the shoulder 20 of the handle 18 at the inner ends of the knuckles. This binding action is also caused at the outer end oi the knuckle 16 by reasonof the inner end of the collar or nut 23 being drawn against the end of the knuckle 16. This will lock the jaws against separation.

1 When the blade is thus locked in the handle, the blade may be sharpened by placing the outer face 31 of the jaw 1001' the outer face 32 of the jaw 11 against the strop 83 and which faces serve as guides for moving the blade acrossthe strop, the holder being rotated on the knuckles 1d and'16 to reverse the direction of movement of the holder with respect to the strop. Furthermore the angles of the faces 3132 coincide with the {,angle of inclination of the edge of the razor a blade 30, thereby vinsuring a proper angle .ofinclination. olithe edge of the razor blade the 30, and also insuring a proper sharpening of the blade, and prevents injury to the edge of the blade byan inexperienced operator or user of the device.

To release the blade, the operator grasps the portion 15 of the knuckle 14 to hold the jaw 11 against rotation. The handle 18 is then rotated anti-clockwise while the jaw 11 is held against rotation and this will cause the threads 17 and 22 onthe handle at the knuckle 16 to release the binding action between the parts and a further rotation of the handle in the same direction will cause the jaw 10 to move. with the handle.

In order to permit the sharpening device to move freely in the hand of the operator to permit a free and easy turning of the holder while sharpening, there is provided a swiveled bearing 34 which is connectec with the free end of the handle 18. This bearing embodies ahand engaging portion provided with a stem 35 adapted to be seated in a recess 36 in the end of the handle. The stem is provided with a circumferential groove 37 registering with a corresponding groove in the wall of the recess 36. A spring split ring 38 is seated within the groove 36 and is forced with the stem 35 into the recess 36. When the ring 38 assumes a position opoosite the recess 39 the rin will ex and and l zenter the recess '39 so as to lock'these parts together and permit of a rotary movement of the bearing 3% with respect to the handle. In use this bearing 34 rests against the palm of the hand and it will be readily seen that the rotation of the handle will be e rted upon the bearing and not upon the hand.

1V hile the preferred form of the invention has been herein. shown anddescribcd, various changes may be made in tl e details of construction and in the combination and arrangement of the several parts within the scope oi the claims without departing from the spirit of this invention.

l Vhat is claimed as new is r 1. A razor blade holder embodying two cotiperating jaws for holding a blade there between, a handle to one end of which both of said jaws are pivotallyconnected, means for causing one of the jaws to move with handle when the latter is rotated and the other jaw is held against movement, and means whereby the axial rotationrof the handle with respect to the jaws will lock the jaws in a gripping relation with respect to eachother.

2. A razor blade holder embodying two coiiperating jaws forholding a blade therebetween, a handle to one end of which both of said jaws are pivotally connected, means for causing one of the jawsto move with thehandle when the latter. is rotated and the other jaw is held against movement, means forlocking the jaws in a gripping relation withjrespect,toeach other, and a hand engaging bearing connected with one of the jaws at the other end of the handle and with respect to which bearing the handle is freely rotatable.

3. A razor blade holder embodying two cotiperating jaws for holding a blade therebetween, a handle to one end of which both of said jaws are connected for pivotal movementwith respect to the handle and with respect to each other, means for causing one ofthe jaws to move with the handle when. the latter is rotated and the other jaw is held against movement, and means whereby the rotation of the handle with respect to the jaws will cause a binding action between the jaws at their pivots for locking the jaws in gripping relation with respect to each other.

4. A razor blade holder embodying two cotiperating jaws for holding a blade therebetween, a handle to one end of which both of said jaws are connected for pivotal movement with respect to the handle and with respect to each other, means for causing one of the jaws to move with the handle when the latter is rotated and the other jaw is held against movement. and means for shifting one of the jawswith respect to the other in a direction lengthwise of the pivot to cause the jaws to exert a binding action against each other attheir pivot.

5. A razor blade holder embodying two cotiperating jaws for holding a blade therebetween, a handle to one end of which the jaws are connected for'pivotal movement with respect to eachother, and means whereby one of the jaws may be caused to move with the handle when the other jaw. is held 7 against movement, the said means embodying provisions whereby the handle be moved inclependentlywvlth respect to the first recited aw to cause binding and releasing actions between the jaws at their pivots.

6. A razor blade holder embodying two cooperating jaws for holding a blade therebetween, a handle to one end oi which the jaws are connected for pivotal movement with respect to each other, and means whereby one of the jaws may be caused to move with the handle when the other jaw is held against movement, the said means embodying spaced-shoulders connected with one of the parts and a separate element controlled by the other part and operable between said shoulders, the diameter of said element being considerably smaller than the space be tween said shoulders whereby a lost motion will be produced between the parts. i

7. A razor blade holder embodying two cooperating jaws for holding a blade there between, a handle to one end of which the jaws are connected for pivotal movement with respect to each other, and means whereby one of the jaws may be caused to move with the handle when the other. jaw is held against movement, the said means embodying recesses in adjacent faces 01"". the handle and jaw, and a separate pin disposed between the parts and seated in said recesses, one of said recesses being of a width considerably greater than the diameter of the said pin.

8. A razor blade holder embodying two coiiperating jaws for holding a blade there between, a handle to one end of which the jaws are pivotally connected, means for causing one of the jaws to rotate with the handle when the other jaw is held against movement, the said means also permitting a movement of the handle with respect to the first recited jaw, and a threaded connection between the handle and the first recited jaw whereby the movement of the handle with respect to the first recited jaw will cause a binding action between the jaws at their pivot.

9. A razor blade holder embodying two coiiperating jaws for holding a blade therebetween, a handle to one end of which the jaws are pivotally connected, means for causing one of the jaws to rotate with the handle when the other jaw is held against movement, the said means also permitting a movement of the handle with respect to the first recited jaw, and a threaded connection between the handle and the first recited jaw whereby the movement of the handle with respect to the first recited jaw will cause a binding action between the jaws at their pivot and in a direction lengthwise of the pivot.

10. A razor blade holder embodying two codperating jaws provided with knuckles, the knuckle of one of the jaws being threaded and having a recess extending transversely of the threads, said jaws being adapted to hold a razor blade therebetween, a handle having a threaded extremity adapted to pass into the knuckles to form a pivot pin, the threads thereon engaging the said threads in the knuckle of one jaw, said handle having a recessed portion adapted to register with the recess in the knuckle and being of a greater width than the last recitedrecess, and a pin seated in and substantially filling the recess in the knuckle and Xtending into the recess in the handle, the last recited recess being of a width considerably greater than the diameter of'the pin, whereby the walls of the recess in the handle will form shoulders adapted to be moved into and out of engagement with the pin to cause one of the jaws to move with the handle when the other jaw is held against movement.

11. A razor blade holder embodying two cooperating jaws provided with knuckles, the knuckle of one of the jaws being threaded and having a recess extending transversely of the threads, said jaws being adapted to hold arazor blade therebetween, a handle having a threaded extremity adapted to pass into the knuckles to form a pivot pin, the threads thereon engaging the said threads in the knuckle of one jaw, said handle having a recessed portion adapted to re ister with the recess in the knuckle and being of a'greater width than the last recited recess, and a pin seated in and substantially filling the recess in the knuckle and extending into the recess in the handle,

the last recited recess being of a width considerably greater than the diameter of the cooperating jaws provided with knuckles,

. the knuckle of one of the jaws being threaded and having a recess extending transversely oi the threads, sald aws being 7 adapted to hold a razor blade therebetween,

a handle having a threaded extremity adapted to pass into the knuckles to form a pivot pm, the threads thereon engaging the said threads in the knuckle of one jaw, said handle having a recessed portion adapted to register with the recess in the knuckle and being of a greater width than the last recited recess, a pin seated in and substantially filling the recess in the knuckle and extending into the recess in the handle, the lastrecited recess being of a width considerably greater than the diameter ot the pin, whereby the walls of the recess in the handle will form shoulders adapted to be moved into and out of engagement with the pin to cause one of the jaws to move into the handle when the other jaw is vheld against movement, and means for holding the pin against displacement. V

13. A razorv blade holder embodying two cooperating jaws. provided with knuckles, the knuckle of one of the jaws being threaded and having a recess extending transversely of the threads, said jaws being adapted to hold a razor bladetherebetween, a handle having a threaded extremity adapt ed to pass into' the knuckles to form a pivot pin, the threads thereon engaging the said stantially filling the recess in the knuckle and extending into the recess in the handle, the last recited recess being of a width considerably greater than the diameter of the pin, whereby the walls of the recess in the handle will form shoulders adapted to be moved into and out of engagement with the pin tocause one of the jaws to move into the handle when the other jaw is held against movement, the threaded connection between the handle and the said jaw operating to cause a gripping action to be exerted upon the jaws in a direction lengthwise of the pivot to lock the jaws in active relation.

14. A razor blade holder embodying a handle, a blade holder carried by the handle at one end, and a hand engaging hearing at the free extremity of the handle and with respect to which bearing the handle is freely rotatable.

15. A razor blade holder embodying a handle, a blade holder at one end of the handle, there being a recess opening through the free end of the handle, a hand engaging bearing having a stem adapted to be'seated inv said recess, registering circumferential grooves in the stem and wall of the recess, and a spring collar seated in said recesses for locking the bearing to the handle, whereby said handle will be freely rotatable with respect to the bearing.

16. A razor blade holder embodying a handle, and jaws carried by one end of the handle for holding a blade therebetweemthe inner faces of said jaws being inclined to hold the blade at a proper angle to sharpen the same, and the outer faces of the jaws being shaped to rest flat upon the sharpening.

surface as the jaw is movedthereacross, the said outer faces being shaped to coincide with theangle of inclination of the razor blade.

In testimony I have signed my name to this specification, on this 27th day of May,

NICHOLAS GIBSON. 

